Leaders of some of the world’s biggest economic powers will arrive in the Canadian Rockies on Sunday for a Group of Seven summit shadowed by a widening war in the Middle East, and U.S. President Donal

OTTAWA—Canadian Prime Minister Mark Carney says a bilateral meeting with President Trump on the sidelines of the upcoming Group of Seven leaders’ summit in Alberta will determine how close the two sides are on a bilateral deal over tariffs.

Diplomats said Canada has ditched the idea of a traditional joint communiqué and would issue chair summaries in hopes of containing a disaster and maintaining engagement with the U.S.